کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
642236 | 1457025 | 2012 | 11 صفحه PDF | دانلود رایگان |
The emission of CO2 into the atmosphere is causing majority of the global warming and thus various end-of-pipe treatment methods have evolved to capture CO2 from fixed point sources. The present article deals with CO2 capture from a simulated gas stream using dilute NaOH solution in a spray column using a two-phase critical flow atomizer capable of producing very fine sprays with high degree of uniformity and moving at very high velocities. Experimentation was carried out to investigate the percentage removal of CO2 as well as interfacial area as functions of different variables. The maximum percentage removal of CO2 observed was about 99.96% for a QL/QG ratio of 6.0 m3/1000 ACM (liquid flow rate of 1.83 × 10−5 m3/s and gas flow rate of 3.33 × 10−3 m3/s) and for a CO2 feed rate of 100 l/h, while the observed values of interfacial area were in the range of 22.62–88.35 m2/m3 within the framework of the experimentation. A simple correlation was developed for predicting the interfacial area as functions of various pertinent variables of the system. Experimental data fitted excellently well with the correlation. The comparison of the interfacial area observed between the present system and the existing systems revealed that the present system produced higher values of interfacial area than the existing systems and hence the performance of the system was better than the existing system.
► CO2 capture performance is reported using dilute NaOH in a spray column with a critical flow atomizer.
► Maximum percentage removal of CO2 observed was about 99.96%.
► Interfacial area observed were in the range of 22.62–88.35 m2/m3.
► A simple correlation developed for predicting the interfacial area.
► Performance of the system was better than the existing systems.
Journal: Separation and Purification Technology - Volume 94, 19 June 2012, Pages 104–114